Resin casting... yeah, I didn't know what I sign up to
The tracks were the most difficult modelling feat I ever faced, especially these little pins... But finally I fixed all parts together, added rubber pads and in the process I put some pigments to avoid doing it on completed suspension.
Fargo - you're right. Resin itself is a peanut in this scale, silicone is about twice its cost.
And this is more or less what I have finished up to now.
P.S. Ma apoligies for white balance - I keep doing something wrong with my camera.